Trunnion-mounted element for knitting-machines.



inafter described and FRANK WILCOMB, OF NORRISTOWN, PENNSYLVANIA, ASSIGNOR'TO WILDMAN 00., OF NORBISTOWN, PENNSYLVANIA, A CORPORATION OF IEENNSYLV'ANIA.

TRUNNION-MOUNTEID I ELEMENT FOR KNITTING1V[ACHINI3S.

.Trunnion-Mounted Elements for Knitting- Machines, of which the following is a specification.

The inventionrelates to knitting machine elements or implements that havea rocking motion, such'for instance, as pivoted web holders, and it concerns particularly the pivotal bearing and journal for said elements.

The invention consists inthe featuresand combination and arrangement of parts hereparticularly pointed out in thefcl'aimsl In the accompanying drawings; c

Figure l. is a sectional view of part of a knitting machine embodying-the invention. Fig. 2 is a sidevieW of partbfthe bed hich supports the rocking elements, with said elements in place. v c Fig. .3 is a plan view showing details. Fig. 4 is a view 'of one of the. elements with its trunnion. c

Fig. 5 shows a" detail. Heretofore it generally has been the practice inorder to make a pivotal mounting to string the elements or implements on a wire or to notch them and mount them onthe wire, the elements being-spaced apart by the walls of a slotted bed orcarrier.

' In carrying out my invention, each implement, as for instance 'a' web ,holder, is furnishedwith its own'-'.trunnions, such as shown at 4, the web holder itself being indicated'at 5.

The rbearing to receive these journals or trunnions is formed by slotting the bed, say

radially, at 6 and forming. a circumferential groove, say at 7, in the tops of the, walls left standing, this slotting and grooving providing guiding walls and notches forming hearings to receive the trunnions. The elements or implements are simply dropped into these slots with their trunnions seated in the notches and the pivotal connection is thus effected. To hold the elements in place I I provide guard means and while this may vary in arrangement and construction, in the particular form shown, it consists of a guard plate 9 resting upon the upper edges Specification of Letters Patent.

10 of the heads of the web holdersjwhich edges are struck concentric with the trunnion so that in all positions of the web holder or other implement it will be held bearing.

- Thls guard simply rests by gravity on the with its trunnion properly seated in the webholders; It is held in position against 4 vertical or lateral displacement by any'suitable means, for instance, by the adjacent wall 11 of the upper structure. The guard may be held in place infvarious ways but in resser wheel 15. The plate 12 closely overlies the guard and holds it down in.

Patented Oct. 23, iei 7. Application filed July 1, 1916. I SeriaINo. 107,107.

place resting on'the upperdg fth Web .1

holders. Any one or allof the pivoted implements may. be removed by lifting off the plate112 and taking oflf the guard, whereupon access is had to any web holder so that itmay be lifted out of place or be replaced.

i I do not restrict myself to the particular kind of implement or element shown herein formed tapered to suit the curvature-of the.

bearing notches which, as above pointed out,

are formed by grooving the'b'earing wall circumferentially and preferably beforethe.

radial slots are formed in said wall. The

trunnions are swagedinto connectionjwith I the implements, thus providing. fillets at the sides of the implements about they trunnions which serve to center the implements in the slots which necessarily' are cut somewhat wider than the implements.

.In renew ng a damaged web holder it' is simply necessa r'yrto remove it from'i'ts slot and replace it with another one. Each implementor web holder carries its own'jourm1 and. in case of wear or a defect developing in'the trunnionit will be'necessary-to replace only this one implement, all the othersbeing left; undisturbed.

In supplying the implements with their trunnions a hole in theimplement receives a small section of round wire, which is upset in the hole to make it fit tightly, shoulders being pressed upon the wire bearing on opposite faces of the implement or the trunnions can be brazed in place. I

Certain features shown herein and not claimed are made the subject of another application.

What I claim is I 1. In combination in a knitting machine, like implements in series having rocking motion, a carrier having guiding walls for the implements and grooved transversely of the. guiding walls, said implements having trunnions individual and fined thereto bearing in the grooves, and having surfaces at their free ends concentric with the trunnions and holding means bearing on said surfaces to retain the implement with the trunnion in the bearings,

52. In'combin'ation in'a knitting machine, an implement having rocking motion, with trunnions individual thereto, and fixed thereon, a bearing for the trunnions having an open upper side for the removal of the implements with their trunnions, said implements having upper surfaces concentric with the trunnions and removable guard means engaging said concentric surfaces to ret'ain the implements with the trunnions in their bearing.

3. In combination in a circular knitting machine for making fabric of small di ameter, independently operating needles, a series of independently operating implements to cooperate with the needles and each having rocking movement, a ringshaped carrier having radial guiding walls for the implements andgrooved circumferentially in respect to the ring-shaped carrier, said independently operable implements having trunnions tapered outwardly from the sides of the implements to conform substantially to the steep arc of the circumferential groove, said trunnions beingfixed to the implements to constitute one unit therewith and seated removably in the curved grooves, substantially as described.

4. in combination in a circular knitting machine for making fabric of smaller diameter, independently operating nedeles, a series of independently operating implements to cooperate with the needles and each having rocking movement, a ring-shaped carrier having radial guiding walls for the implements and grooved circumferentially in respect to the ring-shaped carrier, said independently operable implements ha'ing trunnions tapered outwardly from the sides of the implements to conform substantially to the steep arc of the circumferential groove, said trunnions being fixed to the im- 'plements to constitute one unit therewith and seated removably in the curved grooves, each trunnion having affillet adjacent the to, and having fre ends with concentric mounted, and each having an upstanding portion and an arm exten'dnig radially outconcentric with the trunnions, each element and its trunnions removable from the series as a unit, and guard means bearing against the concentric surfaces for holding the elements in place.

6. In combination in a knitting machine, like instruments in series having rocking motion, trunnions individual and fixed thereto, guard surfaces on said implements concentric with the trunnions, a detachable clamping device against which the concen tric surfaces bear, a carrier having guiding side walls for spacing the implements "and grooved transversely of the guiding Walls for the reception of thetrunnions. v

7. In combination in a knitting machine, a slotted needle cylinder, implements each having trunnions individual and'fixedtheresurfaces, said free ends being spaced'and guided by the walls ofthe slots, and guard means bearing on the concentric surfaces for holdingthe implements in place. 7

8. In combination in a circular knitting machine, needles, pivoted web holders hav-V 'in'g individualtrunnions seated inbearings' and removable upwardlyand individually, said web holders having upperportions with edges concentric with the pivots, 1 and a guard plate 1 resting on I the concentric edges for holding the'web holders intheir'b'earings, substantially as described.

9. In combination in' a circular knitting machine, needles, webholde'rspivotally supported and having a fabric engaging nose,

the upper edge of the web holder being'concentric with the pivot thereof, said web holders being individually removable upwardly from theirpivotbe'arings and means engaging the upper concentric edges of the web, holders for holding them in their pivot bearings, substantially as described.

10. In combination'in a circular knitting machine, needles, pivoted web-holders -havingindividual trunnions seated inbearings and'removable individually, saidWeb holders having surfaces concentric with their pivots,-and a' guard plate resting on the concentric surfaces for holding the web holders in their bearings,rand a cover for holding.

the guard plate in place, said cover and" plate being removably mounted, substa ns tially as described.

11. In combination in a-knitting machine, 125. needles, web holders individually pivotally ward, and with the pivot at the'junction of said upstanding portion and radial arm, the

upstanding portion at its top having an inwardly extending head, with a fabric engaging throat at the inner end thereof, the upper edge of the head being concentric with the pivot, cam means for operating the radially extending arm, and a plate overlying and engaging the upper concentric edge of the inwardly extending head to hold said web holder down in its pivot bearings, substantially as described.

12. In combination in a circular knitting machine, a needle cylinder having radial slots in its top, a ring encircling the upper part of the cylinder and slotted radially at its top, pivoted web holders mounted on said ring below the top thereof, said web holders having an upper portion extending inwardly and guided by the slots in the ring and buried in the cylinder top, and having a' fabric engaging throat above the cylinder verge, said web holders having outwardly extending arms and operating means therefor for imparting rocldng movement to the web holder into and out of engage ment with the fabric, substantially as described.

In testimony whereof, I aflix my signature.

FRANK WILOOMB.

Copies of this patent may be obtained for flve cents each, by addressing the Commissioner of Patents, Washington, D. G. I 

